Results 31 to 40 of about 580,681 (256)

On Sound Reflection in Superfluid

open access: yes, 2007
We consider reflection of the first and the second sound waves by a rigid flat wall in superfluid. Nontrivial dependence of the reflection coefficients on the angle of incidence is obtained.
B.P. Konstantinov   +9 more
core   +1 more source

Determination of the conversion coefficients from the dose-length product to the effective dose for CT-examinations of the whole body including lower extremitie

open access: yesРадиационная гигиена
Today in the Russian Federation, the existing method for assessing patients` effective doses during computed tomography in the form of conversion coefficients from the dose-length product provides for the area from the head to the upper third of the ...
P. S. Druzhinina   +5 more
doaj   +1 more source

Characterization of Pore Throat Size Distribution in Tight Sandstones with Nuclear Magnetic Resonance and High-Pressure Mercury Intrusion

open access: yesEnergies, 2019
Characterization of pore throat size distribution (PTSD) in tight sandstones is of substantial significance for tight sandstone reservoirs evaluation. High-pressure mercury intrusion (HPMI) and nuclear magnetic resonance (NMR) are the effective methods ...
Hongjun Xu   +6 more
doaj   +1 more source

Determination of Calibration X-Ray Beam Qualities and Establish a Set of Conversion Coefficients for Calibration of Radiation Protection Devices Used in Diagnostic Radiology

open access: yesEast European Journal of Physics, 2021
The use of X-ray facilities in calibrating radiation measuring equipment in diagnostic radiology requires an exact knowledge of the radiation field.
Tanjim Siddiqua   +5 more
doaj   +1 more source

On the reliability of the theoretical internal conversion coefficients

open access: yes, 2000
Possible sources of uncertainties in the calculations of the internal conversion coefficients are studied. The uncertainties induced by them are estimated.Comment: 16 pages (including 3 figures inserted by 'epsfig ...
Band I M   +52 more
core   +1 more source

Criterion‐Related Validity of the Neuropsychological Quick Assessment for Screening Cognitive, Motor, and Behavioral Impairments in Patients With Pediatric Brain Tumors: An Observational Pilot Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Neuropsychological complications may impair the qualitative prognosis of patients with pediatric brain tumors. However, multifaceted evaluations cannot be conducted in all patients because they are time consuming and burdensome for patients.
Ami Tabata   +9 more
wiley   +1 more source

The role of nonlinear optical absorption in narrow-band difference frequency terahertz-wave generation

open access: yes, 2009
We present a general analysis of the influence of nonlinear optical absorption on terahertz generation via optical difference frequency generation, when reaching for the quantum conversion efficiency limit.
Bivona, Saverio   +4 more
core   +1 more source

Parent Quality of Life at Two Years Following Their Child's Completion of Acute Lymphoblastic Leukemia Treatment

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Parents of children treated for acute lymphoblastic leukemia (ALL) often experience significant caregiver burden and disruption to their well‐being. While parent quality of life (QoL) during treatment is well characterized, little is known about outcomes during early survivorship.
Sara Dal Pra   +3 more
wiley   +1 more source

Conversion relation of centrifugal pumps as hydraulic turbines based on the amplification coefficient

open access: yesAdvances in Mechanical Engineering, 2017
Most centrifugal pumps with low specific speed are designed using the method of increasing the flow rate; by this, each designer selects different flow rate amplification coefficients for the pumps.
Guangtai Shi   +3 more
doaj   +1 more source

Chemistry in Evaporating Ices: Unexplored Territory

open access: yes, 2010
We suggest that three-body chemistry may occur in warm high density gas evaporating in transient co\textendash desorption events on interstellar ices. Using a highly idealised computational model we explore the chemical conversion from simple species of ...
Boogert   +10 more
core   +1 more source

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